services/billing-aws/src/main/java/com/epam/datalab/core/parser/ColumnInfo.java
<filename>services/billing-aws/src/main/java/com/epam/datalab/core/parser/ColumnInfo.java/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.epam.datalab.core.parser;

/**
 * Describe the info of column mapping: source to target.
 */
public class ColumnInfo {

    /**
     * The target column name.
     */
    public final String targetName;

    /**
     * The source column name.
     */
    public final String sourceName;

    /**
     * The source column index.
     */
    public final int sourceIndex;

    /**
     * Instantiate the info of column mapping.
     *
     * @param targetName  the target column name.
     * @param sourceName  the source column name.
     * @param sourceIndex the source column index.
     */
    public ColumnInfo(String targetName, String sourceName, int sourceIndex) {
        this.targetName = targetName;
        this.sourceName = sourceName;
        this.sourceIndex = sourceIndex;
    }

    @Override
    public String toString() {
        return targetName + "=" + (sourceName == null ? "" : sourceName + "[" + sourceIndex + "]");
    }
}
